Double-column row type steel platform structure for offshore photovoltaic

Abstract

The utility model discloses a double-column row-type steel platform structure for offshore photovoltaic, and relates to the technical field of offshore photovoltaic power generation, the row-type steel platform structure is formed by continuously installing a plurality of steel platforms at intervals, and each steel platform comprises a double-column foundation, an upper platform steel structure, an adjustable U-shaped bolt structure and a photovoltaic assembly. The double-column type foundation is composed of two piles which are connected with each other, the upper platform steel structure is installed on the double-column type foundation through the adjustable U-shaped bolt structure, the photovoltaic assembly is installed on the upper platform steel structure, and the double-column type foundation is shared between the steel platforms. According to the double-column row type steel platform structure, the upper platform steel structure and the double-column type foundation are connected through the adjustable U-shaped bolt structure, welding and grouting are not needed, and installation and connection are fast; after a plurality of steel platforms are longitudinally connected into a whole, the integrality is good, the longitudinal rigidity is increased, and the longitudinal deformation is small.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore photovoltaic power generation, in particular to a double-column continuous steel platform structure for offshore photovoltaic power generation. Background Art

[0002] Offshore photovoltaic refers to a photovoltaic power generation station built in the ocean, which uses photovoltaic technology to convert solar energy into electric energy. Compared with onshore, it is necessary to comprehensively consider self-weight, wind, snow, earthquake loads, wave and current loads, and solve the safety problems of engineering structures under extreme storm surge conditions. The integral offshore photovoltaic support platform structure is a common traditional technology for offshore photovoltaic, generally a 4-pile steel platform structure. First, the construction of the lower 4 piles is completed, and then the upper platform is installed on the upper part of the 4 piles. It has the characteristics of relatively simple structure and more convenient construction of the upper structure, but there are still the following problems:

[0003] (1) Large amount of pile foundation work. In the traditional technology, four pile foundations correspond to one steel platform, and the pile foundations cannot be shared, so the amount of pile foundation work is large.

[0004] (2) Small stiffness of cantilever piles. In the traditional technology, the four pile foundations are constructed separately, and the amount of work for pile connection measures is large. Generally, no connection measures are taken, and they are all cantilever piles, and their horizontal stiffness is small.

[0005] (3) Low pile foundation construction efficiency. In the traditional technology, the four pile foundations are constructed separately, and the upper platform and the lower pile foundations are often connected in the form of spherical joints or end plates, so the requirement for pile sinking accuracy is high, which affects the pile sinking efficiency; at the same time, the upper platform and the lower pile foundations are often connected by welding, and the efficiency of multiple welding is low.

[0006] Difficult pedestrian traffic and cable connection between platforms. In the traditional technology, the steel platforms are independent of each other, and the distance between the platforms is large. Therefore, during the maintenance stage, pedestrian traffic between the platforms needs to get off the steel platform and take a boat to reach the next platform, and additional structural measures are required for wiring between the steel platforms. Summary of the Utility Model

[0007] The utility model provides a double-column continuous steel platform structure for offshore photovoltaic to solve the problems mentioned in the above background art.

[0008] The utility model is realized by the following technical solutions.

[0009] The utility model provides a double-column continuous row type steel platform structure for offshore photovoltaic power generation. The continuous row type steel platform structure is formed by continuously and spaced installation of multiple steel platforms. Each single steel platform includes a double-column foundation, an upper platform steel structure, an adjustable U-shaped bolt structure, and photovoltaic modules. The double-column foundation is composed of two piles connected to each other. The upper platform steel structure is installed on the double-column foundation through the adjustable U-shaped bolt structure. The photovoltaic modules are installed on the upper platform steel structure. The double-column foundations are shared among the steel platforms.

[0010] In this technical solution, a double-column continuous row type structure is adopted, that is, double-column foundations are arranged at both ends of each steel platform, and each double-column foundation is shared by the steel platforms on both sides. Through the double-column foundation, multiple steel platforms are longitudinally connected into a whole.

[0011] Furthermore, the two piles are connected by multiple diagonal braces and horizontal braces.

[0012] Furthermore, the double-column foundation is prefabricated into a whole in the factory.

[0013] In this technical solution, a double-column foundation is adopted, that is, a double-column foundation is arranged at each end of the long side of each steel platform. The double-column foundation is composed of two piles and the diagonal braces and horizontal braces between the piles. The double-column foundation is prefabricated into a whole in the factory and is integrally sunk into the mud surface.

[0014] Furthermore, the upper platform steel structure is composed of a lower chord, diagonal web members, an upper chord, and purlins. The diagonal web members are welded between the lower chord and the upper chord. The purlins are divided into main purlins and secondary purlins connected vertically. The main purlins are installed above the upper chord, the secondary purlins are installed on the main purlins, and the photovoltaic modules are installed above the secondary purlins.

[0015] Furthermore, the upper platform steel structure is prefabricated into a whole in the factory.

[0016] Furthermore, the adjustable U-shaped bolt structure includes a horizontal connecting rod, a horizontal connecting beam structure, a horizontal web member, an inclined web member, and a U-shaped bolt structure. The horizontal web member is welded between the horizontal connecting rod and the lower chord, the inclined web member is welded between the horizontal connecting rod and the upper chord, and the horizontal connecting rod is installed on the horizontal connecting beam structure through the U-shaped bolt structure.

[0017] Furthermore, the horizontal connecting beam structure is composed of a horizontal connecting beam, a foundation connecting beam, and a longitudinal connecting beam. The foundation connecting beam is arranged on the side of the pile, the longitudinal connecting beam is welded on both sides of the foundation connecting beam, and the horizontal connecting beam is welded above the foundation connecting beam and the longitudinal connecting beam.

[0018] Furthermore, the U-bolt structure consists of a U-bolt, two trapezoidal steel plates and nuts. The two trapezoidal steel plates are welded to the upper part of the horizontal connecting beam with their short sides facing each other, leaving a gap slightly larger than the diameter of the horizontal connecting rod in the middle to form a guiding structure. The horizontal connecting rod is installed on the upper part of the horizontal connecting beam through this guiding structure, and multiple U-bolts and nuts are used to fix the horizontal connecting rod to the horizontal connecting beam.

[0019] In this technical solution, an adjustable U-bolt connection structure is adopted between the upper platform steel structure and the pile. That is, 2 horizontal connecting rods are cantilevered at both ends of the lower chord. On the pile, a horizontal connecting beam is arranged perpendicular to the horizontal connecting rod, and the two are connected by U-bolts and nuts.

[0020] The beneficial effects of the utility model are as follows:

[0021] (1) Adopting a double-column foundation: ① The double-column foundation consists of two piles and the diagonal braces and horizontal braces between the piles, forming a force-bearing structure of a planar truss. The force-bearing condition is greatly improved compared with the traditional cantilever pile structure, and the horizontal stiffness is greatly increased. Under the same platform load, the diameter of the pile can be reduced, and the steel consumption of the foundation can be reduced; ② The double-column foundation consists of two piles and the diagonal braces and horizontal braces between the piles, forming a sheet structure, which can be stacked and transported during transportation, and the transportation is convenient; ③ The double-column foundation is integrally fabricated and integrally sunk into the mud surface. Therefore, its relative position is fixed, and no precise positioning at sea is required. The pile driving accuracy is not strict, and the pile sinking is convenient and fast.

[0022] (2) An adjustable U-bolt structure is used to connect the upper platform steel structure and the double-column foundation: ① When installing the upper platform steel structure, first temporarily place the upper platform steel structure on the horizontal connecting beam of the double-column foundation, and then connect the upper platform steel structure and the double-column foundation through the U-bolt structure, without welding or grouting, and the installation and connection are fast; ② The horizontal connecting rod on the upper platform steel structure is perpendicular to the horizontal connecting beam on the double-column foundation, and the two are connected by U-bolts and nuts. The horizontal connecting rod is a round pipe with an equal diameter, and its position relative to the horizontal connecting beam can be longitudinally adjusted. After adjustment, it does not affect the U-bolt connection. Therefore, this connection structure allows a certain tolerance for the installation error of the double-column foundation and is not strict with the pile driving accuracy. Therefore, the pile sinking is fast.

[0023] (3) Adopting a double-column continuous row structure: ① After multiple steel platforms are longitudinally connected into a whole, the integrity is good, the longitudinal stiffness is increased, and the longitudinal deformation is small; ② After multiple steel platforms are longitudinally connected into a whole, there is no relative displacement in the longitudinal direction of each steel platform, and each adjacent steel platform is connected through a double-column foundation. The pedestrian traffic and cable channels are all longitudinally connected, which is convenient for operation and maintenance and cable laying, and solves the problem of cable connection between each steel platform. Description of the Drawings

[0024] Figure 1 Side elevation view of the double-column continuous steel platform structure for offshore photovoltaic of the present utility model;

[0025] Figure 2 Front elevation view of the double-column continuous steel platform structure for offshore photovoltaic of the present utility model;

[0026] Figure 3 Front elevation view of a single steel platform of the present utility model;

[0027] Figure 4 is Figure 3 Partial enlarged view of A in

[0028] Figure 5 Plan view of the steel structure of the upper platform of the present utility model;

[0029] Figure 6 Plan view of the upper chord of the steel structure of the upper platform of the present utility model;

[0030] Figure 7 Plan view of the diagonal web members of the steel structure of the upper platform of the present utility model;

[0031] Figure 8 Plan view of the lower chord of the steel structure of the upper platform of the present utility model;

[0032] Figure 9 Plan view of the connection between the steel structure of the upper platform and the double-column foundation of the present utility model;

[0033] Figure 10 is Figure 9 Partial enlarged view of B in

[0034] Figure 11 Elevation view of the connection between the steel structure of the upper platform and the double-column foundation of the present utility model;

[0035] Figure 12 Plan view of the U-bolt connection of the present utility model;

[0036] Figure 13 Elevation view of the U-bolt connection of the present utility model;

[0037] Figure 14 Section view of the U-bolt connection of the present utility model.

[0038] In the figure:

[0039] 1 - Double-column foundation, 11 - Pile, 12 - Diagonal brace, 13 - Horizontal brace;

[0040] 2 - Steel structure of the upper platform, 21 - Lower chord, 22 - Diagonal web member, 23 - Upper chord, 24 - Purlin, 241 - Main purlin, 242 - Secondary purlin;

[0041] 3 - Adjustable U - bolt structure, 31 - Horizontal connecting rod, 32 - Horizontal connecting beam structure, 321 - Horizontal connecting beam, 322 - Foundation connecting beam, 323 - Longitudinal connecting beam, 33 - Horizontal web member, 34 - Diagonal web member, 35 - U - bolt structure, 351 - U - bolt, 352 - Trapezoidal steel plate, 353 - Nut;

[0042] 4 - Photovoltaic module;

[0043] 5 - Steel platform. Detailed implementation mode

[0044] The following further explains the structures involved in the present utility model or the technical terms used herein. These explanations are merely examples to illustrate how the present utility model is implemented and shall not constitute any limitation to the present utility model.

[0045] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "longitudinal", etc. are based on the orientation or positional relationships shown in the drawings. They are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the indicated positions or elements must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and shall not be construed as indicating or implying relative importance.

[0046] In the description of the present utility model, unless otherwise clearly defined and limited, terms such as "connection", "fixation", etc. shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a direct connection or an indirect connection through an intermediate medium, and can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0047] As Figure 1-14 shown, a double - column continuous - row steel platform structure for offshore photovoltaic power generation. The continuous - row steel platform structure is formed by continuously and spaced - installed multiple steel platforms 5. A single steel platform 5 includes a double - column foundation 1, an upper - platform steel structure 2 installed between the double - column foundations 1, an adjustable U - bolt structure 3 for connecting the double - column foundation 1 and the upper - platform steel structure 2, and a photovoltaic module 4 installed on the upper part of the upper - platform steel structure 2. The double - column foundations 1 are shared among the steel platforms 5, and the steel platforms 5 are continuously and spaced - installed to form a row - type steel platform structure.

[0048] As Figure 2-3As shown in the figure, a double-column continuous row structure is adopted, that is, double-column foundations 1 are arranged at both ends of each steel platform 5, and each double-column foundation 1 is shared by the steel platforms 5 on both sides. Through the double-column foundation 1, multiple steel platforms 5 are longitudinally connected into a whole.

[0049] As Figure 1-2 shown, the double-column foundation 1 consists of two piles 11, multiple diagonal braces 12 and horizontal braces 13 between the piles 11. The form of the diagonal brace 12 can be a single round pipe, square pipe, polygonal pipe, or an "X-shaped" diagonal brace formed by two pipes; the lower part of the double-column foundation 1 is immersed below the mud surface, and the upper part is above the mud surface. The two piles 1 can be of the same height or have a certain height difference, so that the upper platform steel structure 2 and the photovoltaic modules 4 after installation have a certain inclination angle, improving the power generation efficiency of the photovoltaic modules.

[0050] As Figure 1-7 shown, the upper platform steel structure 2 consists of a lower chord 21, diagonal web members 22, an upper chord 23 and purlins 24. The entire upper platform steel structure 2 is prefabricated in the factory. The diagonal web members 22 are welded between the lower chord 21 and the upper chord 23 to form a space grid structure. The purlins 24 are divided into main purlins 241 and secondary purlins 242. The main purlins 241 are installed on the upper part of the upper chord 23, and the secondary purlins 242 are installed on the upper part of the main purlins 231 and are perpendicular to the main purlins 241; the photovoltaic modules 4 are installed on the upper part of the secondary purlins 242.

[0051] As Figure 8-14 shown, the adjustable U-bolt structure 3 consists of a horizontal connecting rod 31, a horizontal connecting beam structure 32, a horizontal web member 33, an inclined web member 34 and a U-bolt structure 35: the horizontal connecting beam structure 32 consists of a horizontal connecting beam 321, a foundation connecting beam 322 and a longitudinal connecting beam 323. The U-bolt structure 35 consists of a U-bolt 351, two trapezoidal steel plates 352 and a nut 353. The horizontal connecting rod 31 is installed on the horizontal connecting beam structure 32, and the U-bolt structure 35 fixes the horizontal connecting rod 31 on the horizontal connecting beam structure 32.

[0052] Specifically, as Figure 11-13 shown, the horizontal connecting rod 31 is welded on both sides of the lower chord 21 of the upper platform steel structure 2. The horizontal web member 33 is welded between the horizontal connecting rod 31 and the lower chord 21. The inclined web member 34 is welded between the horizontal connecting rod 31 and the upper chord 23; the foundation connecting beam 322 is arranged on the side of the pile 11, the longitudinal connecting beam 323 is welded on both sides of the foundation connecting beam 322, and the horizontal connecting beam 321 is welded on the upper part of the foundation connecting beam 322 and the longitudinal connecting beam 323.

[0053] As Figure 14As shown, two trapezoidal steel plates 352 are welded to the upper part of the horizontal connecting beam 321 with their short sides facing each other, leaving a gap slightly larger than the diameter of the horizontal connecting rod 321 in the middle to form a guiding structure. The horizontal connecting rod 31 is installed on the upper part of the horizontal connecting beam 321 through this guiding structure, while restricting the lateral movement of the horizontal connecting rod 31. The horizontal connecting rod 31 is perpendicular to the horizontal connecting beam 321, and the horizontal connecting rod 31 is a circular tube with a constant diameter and can move longitudinally between the trapezoidal steel plates 352, thereby realizing the longitudinal adjustment of the upper platform steel structure 2 and playing a guiding role for the installation of the horizontal connecting rod 31.

[0054] As Figure 14 shown, after the adjustment is completed, a multi-channel U-bolt structure 35 is used for fixation. Specifically, the U-bolt 351 is used to fix the horizontal connecting rod 31 to the horizontal connecting beam 321, and the nut 353 is used for fixation.

[0055] Please refer to Figure 1-14 , the installation method of the above double-column continuous steel platform structure for offshore photovoltaic is as follows:

[0056] S1: Prefabricate the double-column foundation 1 in the factory, set the foundation connecting beam 322 on the side of the pile 11, then weld the longitudinal connecting beam 323 on both sides of the foundation connecting beam 322, and then install the horizontal connecting beam 321 on the upper parts of the foundation connecting beam 322 and the longitudinal connecting beam 323.

[0057] S2: Prefabricate the upper platform steel structure 2 in the factory, weld the horizontal connecting rod 31 on both sides of the lower chord 21 of the upper platform steel structure 2, and then weld the horizontal web member 33 and the diagonal web member 34 in sequence.

[0058] S3: Transport the installed double-column foundation 1 and the upper platform steel structure 2 to the designated position in the photovoltaic field area.

[0059] S4: According to the design requirements, use pile driving equipment to sink multiple groups of double-column foundations 1 as a whole into the designated position and the design elevation.

[0060] S5: Hoist multiple upper platform steel structures 2 with horizontal connecting rods 31 between the double-column foundations 1 in sequence, install them on the horizontal connecting beam structure 32 relying on the trapezoidal steel plates 352. The hoisting of the upper platform steel structure 2 can be longitudinally adjusted in combination with the on-site pile foundation conditions, and finally fixed with the U-bolt structure 35 to complete the overall installation.

[0061] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. Double-column continuous steel platform structure for offshore photovoltaic, characterized in that: The continuous row of steel platform structures is formed by continuously and intermittently installing multiple steel platforms. Each individual steel platform includes a double-column foundation, an upper platform steel structure, an adjustable U-bolt structure, and a photovoltaic module. The double-column foundation consists of two piles connected to each other. The upper platform steel structure is installed on the double-column foundation through the adjustable U-bolt structure. The photovoltaic module is installed on the upper platform steel structure. The double-column foundations are shared among the steel platforms.

2. The double-column continuous steel platform structure for offshore photovoltaic according to claim 1, wherein: The two piles are connected by multiple diagonal braces and horizontal braces.

3. The double-column continuous steel platform structure for offshore photovoltaic according to claim 1, characterized in that: The double-column foundation is prefabricated as a whole in the factory.

4. The double-column continuous steel platform structure for offshore photovoltaic according to claim 1, characterized in that: The upper platform steel structure consists of a lower chord, diagonal web members, an upper chord, and purlins. The diagonal web members are welded between the lower chord and the upper chord. The purlins are divided into main purlins and secondary purlins that are vertically connected. The main purlins are installed above the upper chord, the secondary purlins are installed on the main purlins, and the photovoltaic module is installed above the secondary purlins.

5. The double-column continuous steel platform structure for offshore photovoltaic according to claim 1, characterized in that: The upper platform steel structure is prefabricated as a whole in the factory.

6. The double-column continuous steel platform structure for offshore photovoltaic according to claim 1, characterized in that: The adjustable U-bolt structure includes a horizontal connecting rod, a horizontal connecting beam structure, a horizontal web member, a diagonal web member, and a U-bolt structure. The horizontal web member is welded between the horizontal connecting rod and the lower chord. The diagonal web member is welded between the horizontal connecting rod and the upper chord. The horizontal connecting rod is installed on the horizontal connecting beam structure through the U-bolt structure.

7. The double-column continuous steel platform structure for offshore photovoltaic according to claim 6, characterized in that: The horizontal connecting beam structure consists of a horizontal connecting beam, a foundation connecting beam, and a longitudinal connecting beam. The foundation connecting beam is arranged on the side of the pile. The longitudinal connecting beam is welded on both sides of the foundation connecting beam. The horizontal connecting beam is welded above the foundation connecting beam and the longitudinal connecting beam.

8. The double-column continuous steel platform structure for offshore photovoltaic according to claim 7, wherein: The U-bolt structure consists of a U-bolt, two trapezoidal steel plates, and nuts. The two trapezoidal steel plates are welded on the upper part of the horizontal connecting beam with their short sides facing each other, leaving a gap larger than the diameter of the horizontal connecting rod in the middle to form a guiding structure. The horizontal connecting rod is installed on the upper part of the horizontal connecting beam through this guiding structure, and multiple U-bolts and nuts are used to fix the horizontal connecting rod on the horizontal connecting beam.

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